000 00282nam a22001217a 4500
999 _c6437
_d6437
003 OSt
005 20210320214230.0
008 210320b ||||| |||| 00| 0 eng d
100 _aPROAKIS, G. JOHN
245 _aCOMMUNICATION SYSTEMS ENGINEERING
260 _bPEARSON
942 _2ddc
_cGE